(19)
(11) EP 1 118 476 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.05.2002 Bulletin 2002/21

(43) Date of publication A2:
25.07.2001 Bulletin 2001/30

(21) Application number: 01101250.7

(22) Date of filing: 19.01.2001
(51) International Patent Classification (IPC)7: B43K 21/04
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 20.01.2000 JP 2000014211
22.12.2000 JP 2000390066

(71) Applicant: KOTOBUKI & CO., LTD.
Kyoto-shi Kyoto (JP)

(72) Inventors:
  • Yoshio, Noguchi, c/o Kotobuki & Co., Ltd.
    Kawagoe-shi, Saitama-ken (JP)
  • Hidehei, Kageyama, c/o Kotobuki & Co., Ltd.
    Kawagoe-shi, Saitama-ken (JP)

(74) Representative: Eisenführ, Speiser & Partner 
Martinistrasse 24
28195 Bremen
28195 Bremen (DE)

   


(54) Double chuck type mechanical pencil and internal writing mechanism thereof


(57) Disclosed is a double chuck type mechanical pencil and an internal writing mechanism thereof comprising a feed chuck (9) for feeding a normal lead, and a tip chuck (5) for holding the tip of a lead for reducing a residual lead. The double chuck type mechanical pencil comprises a lead tank (13) provided movably in a longitudinal direction within a barrel, a feed chuck connected to the lead tank to feed leads, a chuck ring (10) loosely fitted in the feed chuck, a sleeve provided externally of the feed chuck, a chuck spring (11) provided between the sleeve and the lead tank, an inner tube (12) provided externally of the sleeve and movable integrally with the sleeve, a cushion spring (15) provided between the inner tube and the barrel, a tip chuck provided on the end part of the inner tube, a tip ring (6) provided externally of the tip chuck, and a tip spring (7) provided between the tip chuck and the inner tube.






Search report